Overview
The DMO 200 is a high current micro-ohmmeter suitable
for measuring very low resistances in a wide range of
applications. This unit is equally suited to
commissioning, maintenance, and production line
environments. Contact resistance in circuit breakers,
switch panels, isolators, and busbar joints are all
easily and safely measured.

Features

Ultra lightweight only 6.9kg.

1 to 200 Amps DC test current with < 2.5%
ripple.

0.1µΩ resolution.

mV, A, and µΩ displayed simultaneously.

USB memory key for data storage.

USB keyboard.

Pre-settable test current with three buttons to
store user test
current settings.

Large back-lit liquid crystal display (LCD).

Universal supply voltage 90V to 264V AC 50/60Hz

Supplied with 3-meter output lead set.

Optional current clamp allows testing of objects
with both sides earthed.

The DMO 200 is simple to
operate, only requiring the user to select the test
current and switch the output 'ON'. The unit has
presentable test current with three buttons to store
commonly used test values. Selection of all ranges is
fully automatic, and current, voltage and resistance are
displayed simultaneously. The resistance is calculated
from the test current sense voltage. To assist the user,
all readings are held on the display when the output is
switched 'OFF'.

The unit features results
storage using a USB key (memory stick), and is supplied
with a USB keyboard to enter comments to be stored with
readings. All results are time and date-stamped and
saved in a CSV file.

The back-lit display on the
DMO 200 is bright and clear with a wide
viewing angle. The results of a test can be
seen here as they appear on the display of
the unit, showing current, sense voltage and
resistance.

The unit features results storage using a USB key
(memory stick), and is supplied with a USB keyboard to
enter comments to be stored with readings. All results
are time and date-stamped and saved in a CSV file. The
CSV file can be opened with any spreadsheet program such
as Microsoft Excel™ or OpenOffice Calc.

The DMO 200 also has an RS-232 port allowing the unit to
be connected to an optional printer. This can also be
used to control the unit to PLCs for production line use
- the full control of the DMO 200 may be achieved
through the RS-232 port using a simple set of commands.